# A081093 (b-file synthesized from sequence entry)
1 3
2 7
3 31
4 127
5 3583
6 8191
7 131071
8 524287
9 14680063
10 1073479679
11 2147483647
12 266287972351
13 4260607557631
14 17591112302591
15 246290604621823
16 17996806323437567
17 1152917106560335871
18 2305843009213693951